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Instructions for Troubleshooting

RNA customer services

What happens, if…

Efficient and smooth part feeding with minimal maintenance by vibratory feeders is essential, however some common problems can arise if the feeder is not operated properly.

Read on how to troubleshoot vibratory bowl feeder and linear feeder systems.

Bowl Feeders

SRC-N 63-100
SRC-N 160-800

Linear Feeders

GL
SLK
SLL-SLF

Attention
The control unit or the connecting terminal box may only be opened by an electrician. Before opening the a.m. devices, the mains plug must be unplugged!


 

Bowl Feeders SRC-N 63-100

TroublePossible causeRemedy
Vibratory bowl feeder does not start at being switched onMains plug of the controlPlug in the mains plug unit is not plugged in
Connecting cable between vibratory bowl feeder and control unit not plugged inPlug in the 5-pole plug at the control unit
Only in connection with control unit ESK 2000

Sensor gives the faulty message of pile-up, owing to defect or maladjustment (green LED at the vibratory bowl feeder STOP

Replace the sensor or readjust it

Check whether the sensor is plugged in

Fuse in the control unit defectReplace the fuse
Mains switch offSwitch on the mains switch
Magnet coil defectHave the coil checked by trained personnel and , if necessary, have it exchanged.
The vibratory bowl feeder vibrates only slightlyThe control unit is set to 0%Set the controller to 80 %


 

Bowl Feeders SRC-N 160-800

TroublePossible causeRemedy
Vibratory bowl feeder does not start at being switched onMains plug of the controlPlug in the mains plug unit is not plugged in
Connecting cable between vibratory bowl feeder and control unit not plugged inPlug in the 5-pole plug at the control unit
Only in connection with control unit ESK 2000

Sensor gives the faulty message of pile-up, owing to defect or maladjustment (green LED at the vibratory bowl feeder STOP

Replace the sensor or readjust it

Check whether the sensor is plugged in

Fuse in the control unit defectReplace the fuse
Mains switch offSwitch on the mains switch
The vibratory bowl feeder vibrates only slightlyThe control unit is set to 0%Set the controller to 80 %
Wrong vibration frequencyCheck, whether the code at the plug of the control unit is correct. (See type plate and technical data on Operating Instructions chapt 1)
Attention
In case a vibratory bowl feeder for 6000 vibrations/min.is operated without bridge in a 7-pole plug, the control unit and the magnets are in danger!
After a longer operating time the vibratory bowl feeder does not achieve the required capacityScrews at one or several spring assemblies have worked looseTighten the screws (tightening torques see table “technical data” on Operating Instructions Chapt 1)
Springs are brokenReplace broken springs
Magnetic gap misadjustedReadjust magnetic gap (necessary gap width see table “technical data” on Operating Instructions page 1-2)
Fastening screws of the sorting bowl have worked looseTighten the screws
Vibratory bowl feeder makes loud noiseFastening screws of the jacket sheet have worked looseTighten the screws
Bottom of the bowl got jammedEliminate the jam
Foreign bodies in the magnetic gap (chips, material to be conveyed, dust)Switch off the vibratory bowl feeder and remove the foreign bodies. Control the adjustment of the magnetic gap
Only SRHL 400 and SRC-N 800: Counter screw at the tie plate has worked looseRetighten the screws
Vibratory bowl feeder cannot be set to a constant conveying speedThe spring rate of the vibratory system has changed. The vibratory bowl feeder operates
close at the resonance point
Readjust the vibratory bowl feeder. Springs must be removed. See Operating Instructions chapter 5 – Adjustments


 

Linear Feeders GL

TroublePossible causeRemedy
Linear feeder does not start when being switched onMains swtich offSwitch on the mains switch
Mains plug of the control unit is not plugged inPlug in the mains plug.
Connecting cable between linear feeder and control unit is not plugged inPlug in the 5-pole plug at the control unit
Fuse in the control unit defectiveReplace the fuse
Linear feeder vibrates slightlyTurning knob at the control unit is set to 0%Set the controller to 80 %
Wrong vibration frequencyCheck, whether the code at the plug of the linear feeder is correct. (See type plate and technical data on Operating Instructions chapt 1)
Attention
In case a linear feeder for 6000 vibrations/min is operated with a 5-pole plug without bridge, the control unit and the magnet is in danger!
After a longer operating time the linear feeder does no longer come up to the conveying capacity requiredFastening screws of the linear track have worked looseRetighten the screws.
Screws at one or two spring assemblies have worked looseTighten the screws (tightening torques see “technical data” on Operating Instructions chap 1)
Magnetic gap misadjusted
Springs are brokenReplace the broken springs
Oscillator has displaced itself towards the countermassReadjust the oscillator (see Operating Instructions chapter 5)
Linear feeder produces loud noiseFastening screws of the side plates have worked looseRetighten the screws.
Foreign bodies in the magnetic gapSwitch off the linear feeder and remove the foreign bodies, after that check the magnetic
gap adjustment
Linear feeder cannot be adjusted to a constant conveying speedThe spring constant of the oscillating system has changed. The linear feeder works close to the resonance pointReadjust the linear feeder. Springs must be removed. See Operating Instructions chapter 5 – Adjustments


 

Linear Feeders SLK

TroublePossible causeRemedy
Linear feeder does not start when being switched onMains swtich offSwitch on the mains switch
Mains plug of the control unit is not plugged inPlug in the mains plug.
Connecting cable between linear feeder and control unit is not plugged inPlug in the 5-pole plug at the control unit
Fuse in the control unit defectiveReplace the fuse
Linear feeder vibrates slightlyTurning knob at the control unit is set to 0%Set the controller to 80 %
Wrong vibration frequencyCheck, whether the code at the plug of the linear feeder is correct. (See type plate and technical data on Operating Instructions chapt 1)
Attention
In case a linear feeder SLK 05 and SLK 1 are operated without a bridge in a 7-pole plug, the control unit and the magnet is in danger!
After a longer operating time the linear feeder does no longer come up to the conveying capacity requiredFastening screws of the linear track have worked looseRetighten the screws.
Screws at one or two spring assemblies have worked looseTighten the screws (tightening torques see “technical data” on Operating Instructions chapt 1)
Magnetic gap misadjusted
Springs are brokenReplace the broken springs
Linear feeder produces loud noiseForeign bodies in the magnetic gapSwitch off the linear feeder and remove the foreign bodies, after that check the magnetic
gap adjustment
Linear feeder cannot be adjusted to a constant conveying speedThe spring constant of the oscillating system has changed. The linear feeder works close to the resonance pointReadjust the linear feeder. Springs must be removed. See Operating Instructions chapter 5 – Adjustments


 

Linear Feeders SLL/SLF

In case the conveying track has no steady running speed or height amplitude, but at the discharge side a higher running speed or height amplitude than on the feeding side, the spring angle has been wrongly adusted to the gravity center angle (See Operating Instructions chapt. 5.2.2) In this case proceed as follows:

  • Adjust the spring angle larger at all spring assemblies
  • Displace the counterweight “F” against running direction
  • Install additional weight plates at the counterweight
  • Install additional weight “G” into the oscillating profile
  • In case the conveying track has no steady running speed or height amplitude, but at the feeding side a higher running speed or height amplitude than at the discharge side, the spring angle is wrongly adjusted to the gravity center angle (See Operating Instructions chapt. 5.2.2) In this case proceed as follows:

  • Adjust the spring angle smaller at all spring assemblies
  • Displace the counterweight “F” in running direction
  • Dismount additional weight plates at the counterweight
  • Dismount additional weight “G” from the oscillating profile
  • If the running behaviour is unsteady at a steady conveying track speed and if the material to be transported jumps too much between bearing surface and cover, the gravity center angle and the adjusted spring angle of the total system is too large and consequently the height amplitude too high. In this case proceed as follows:

  • Change the gravity center angle (make it more “flat”), by displacing the counterweight “F” against the running direction, installing additional weight plates at the counter weight, installing an additional weight in the oscillating profileand choosing a lighter design for the conveying track if necessary.
  • Adjust the spring angle according to the gravity center angle.
  • If the running behaviour is unsteady especially at material to be conveyed with large surface or which is fouled by oil, the gravity center angle and the adjusted spring angle of the total system is too small. The height amplitude is too low. Owing to that the motion of projection cannot take place and in case of oily workpieces the adhesive power is higher than the projectile power, i. e. the workpiece cannot be lifted. In this case proceed as follows:

  • Change the center of gravity angle (make it “steeper”), by displacing the counterweight “F” in running direction, dismounting
    additional weight plates at the counter weight, dismounting the additional weight from the oscillating profile.
  • Adjust the spring angle according to the new gravity center angle
  • In case the conveying track cannot be adjusted according to the above mentioned criteria, and, if eg. lateral vibrations or in certain areas “dead points” occur, the track stiffness is insufficient. The points of impact or separation work towards each other or asymmetrical structural parts of the track lead to unsteady running behaviour. In this case proceed as follows:

  • Mount additional stiffening ribs
  • Connect impact or separation points by screwings
  • Provide asymmetrical structural parts with counterweights or replace them by lighter materials.
  • TroublePossible causeRemedy
    Linear feeder does not start when being switched onMains swtich offSwitch on the mains switch
    Mains plug of the control unit is not plugged inPlug in the mains plug.
    Connecting cable between linear feeder and control unit is not plugged inPlug in the 5-pole plug at the control unit
    Fuse in the control unit defectiveReplace the fuse
    Linear feeder vibrates slightlyTurning knob at the control unit is set to 0%Set the controller to 80 %
    Transport securing device has not been removedRemove the transport securing device
    Wrong vibration frequencyCheck, whether the code at the plug of the linear feeder is correct. (See type plate and technical data on Operating Instructions chapt 1)
    Attention
    In case a linear feeder SLL400 is operated without a bridge in a 7-pole plug, the control unit and the magnet is in danger!
    After a longer operating time the linear feeder does no longer come up to the conveying capacity requiredFastening screws of the linear track have worked looseRetighten the screws.
    Screws at one or two spring assemblies have worked looseTighten the screws (tightening torques see “technical data” on Operating Instructions chapt 1)
    Magnetic gap misadjustedReadjust the magnetic gap (gap width see ” Technical Data” on Operating Instructions chapt 1)
    Vibrator displaced towards the countermassReadjust the vibrator (see ” Technical Data” on Operating Instructions chapt. 5.2.1)
    Linear feeder produces loud noiseForeign bodies in the magnetic gapSwitch off the linear feeder and remove the foreign bodies, after that check the magnetic
    gap adjustment
    Linear feeder cannot be adjusted to a constant conveying speedThe spring constant of the oscillating system has changed. The linear feeder works close to the resonance pointReadjust the linear feeder. Springs must be removed. See Operating Instructions chapter 5 – Adjustments
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